Fix .gitattributes

The `crlf` Git attribute has been long deprecated and made obsolete. A
replacement for using `-crlf` is `-text`. That way Git doesn't do
newlines normalization on any system.

Since the phpt files don't need specific line endings in any files
except for some special CR characters in some, this can be also removed
and line normalization can happen on all phpt files. The run-tests.php
file converts the CRLF to LF before running the test.

This patch also sets a `diff` attributes for all *.phpt files. It
helps showing diffs for some phpt files with special characters such
as ASCII control characters which makes Git recognize them as binary and
stops showing commit diffs otherwise

Some additional short info about used Git attributes has been also added
as comments for easier understanding.

Remove -text gitattribute

Author: petk

Diff for: .gitattributes

@@ -1,159 +1,20 @@
-ext/mysqlnd/mysqlnd.h           ident
-ext/ext_skel.php                ident
-ext/phar/phar/pharcommand.inc   ident
-ext/dba/libinifile/inifile.c    ident
-ext/dba/libflatfile/flatfile.c  ident
-ext/dba/libcdb/cdb_make.c       ident
-ext/dba/libcdb/cdb.c            ident
-run-tests.php                   ident
-NEWS                            merge=NEWS
-UPGRADING                       merge=NEWS
-UPGRADING.INTERNALS             merge=NEWS
-/ext/bz2/tests/with_strings.phpt	-crlf
-/ext/dom/tests/bug40836.phpt	-crlf
-/ext/dom/tests/domelement.phpt	-crlf
-/ext/iconv/tests/iconv004.phpt	-crlf
-/ext/iconv/tests/iconv_basic.phpt	-crlf
-/ext/iconv/tests/iconv_strpos.phpt	-crlf
-/ext/iconv/tests/iconv_strpos_variation2.phpt	-crlf
-/ext/mbstring/tests/mb_strtoupper_error2.phpt	-crlf
-/ext/phar/tests/delete_in_phar_confirm.phpt	-crlf
-/ext/phar/tests/frontcontroller12.phpt	-crlf
-/ext/phar/tests/security.phpt	-crlf
-/ext/phar/tests/test_signaturealgos.phpt	-crlf
-/ext/reflection/tests/ReflectionMethod_invokeArgs_basic.phpt	-crlf
-/ext/reflection/tests/ReflectionProperty_getModifiers_basic.phpt	-crlf
-/ext/spl/tests/dllist_007.phpt	-crlf
-/ext/spl/tests/iterator_012.phpt	-crlf
-/ext/spl/tests/SplArray_fromArray.phpt	-crlf
-/ext/standard/tests/dir/scandir_variation3.phpt	-crlf
-/ext/standard/tests/general_functions/escapeshellcmd-win32.phpt	-crlf
-/ext/standard/tests/strings/bug26817.phpt	-crlf
-/ext/standard/tests/strings/bug26973.phpt	-crlf
-/ext/standard/tests/strings/bug27457.phpt	-crlf
-/ext/standard/tests/strings/bug28386.phpt	-crlf
-/ext/standard/tests/strings/bug37262.phpt	-crlf
-/ext/standard/tests/strings/bug40637.phpt	-crlf
-/ext/standard/tests/strings/bug40915.phpt	-crlf
-/ext/standard/tests/strings/bug61374.phpt	-crlf
-/ext/standard/tests/strings/chop_error.phpt	-crlf
-/ext/standard/tests/strings/chop_variation2.phpt	-crlf
-/ext/standard/tests/strings/chunk_split_variation10.phpt	-crlf
-/ext/standard/tests/strings/chunk_split_variation8.phpt	-crlf
-/ext/standard/tests/strings/count_chars_variation2.phpt	-crlf
-/ext/standard/tests/strings/dirname_error.phpt	-crlf
-/ext/standard/tests/strings/fprintf_variation_007_64bit.phpt	-crlf
-/ext/standard/tests/strings/highlight_file.phpt	-crlf
-/ext/standard/tests/strings/htmlentities03.phpt	-crlf
-/ext/standard/tests/strings/htmlentities04.phpt	-crlf
-/ext/standard/tests/strings/htmlentities08.phpt	-crlf
-/ext/standard/tests/strings/htmlentities15.phpt	-crlf
-/ext/standard/tests/strings/http_build_query.phpt	-crlf
-/ext/standard/tests/strings/metaphone.phpt	-crlf
-/ext/standard/tests/strings/ord_error.phpt	-crlf
-/ext/standard/tests/strings/printf_basic2.phpt	-crlf
-/ext/standard/tests/strings/printf_variation2.phpt	-crlf
-/ext/standard/tests/strings/quoted_printable_decode_basic.phpt	-crlf
-/ext/standard/tests/strings/rtrim.phpt	-crlf
-/ext/standard/tests/strings/setlocale_variation1.phpt	-crlf
-/ext/standard/tests/strings/sha1_basic.phpt	-crlf
-/ext/standard/tests/strings/similar_text_basic.phpt	-crlf
-/ext/standard/tests/strings/soundex.phpt	-crlf
-/ext/standard/tests/strings/sprintf_basic1.phpt	-crlf
-/ext/standard/tests/strings/sprintf_basic4.phpt	-crlf
-/ext/standard/tests/strings/sprintf_basic7.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation12.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation28.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation29.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation30.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation31.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation38.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation42.phpt	-crlf
-/ext/standard/tests/strings/sprintf_variation6.phpt	-crlf
-/ext/standard/tests/strings/sscanf_basic2.phpt	-crlf
-/ext/standard/tests/strings/sscanf_basic3.phpt	-crlf
-/ext/standard/tests/strings/str_getcsv_001.phpt	-crlf
-/ext/standard/tests/strings/stripcslashes_basic.phpt	-crlf
-/ext/standard/tests/strings/stripos_variation11.phpt	-crlf
-/ext/standard/tests/strings/stripos_variation13.phpt	-crlf
-/ext/standard/tests/strings/stripslashes_variation1.phpt	-crlf
-/ext/standard/tests/strings/stripslashes_variation2.phpt	-crlf
-/ext/standard/tests/strings/stristr_error.phpt	-crlf
-/ext/standard/tests/strings/strnatcasecmp_basic.phpt	-crlf
-/ext/standard/tests/strings/strncasecmp_variation6.phpt	-crlf
-/ext/standard/tests/strings/strncasecmp_variation7.phpt	-crlf
-/ext/standard/tests/strings/strncasecmp_variation8.phpt	-crlf
-/ext/standard/tests/strings/strrchr_error.phpt	-crlf
-/ext/standard/tests/strings/strrchr.phpt	-crlf
-/ext/standard/tests/strings/strrchr_variation11.phpt	-crlf
-/ext/standard/tests/strings/strrpos_error.phpt	-crlf
-/ext/standard/tests/strings/strrpos_variation4.phpt	-crlf
-/ext/standard/tests/strings/strrpos_variation8.phpt	-crlf
-/ext/standard/tests/strings/strstr2.phpt	-crlf
-/ext/standard/tests/strings/strtok_error.phpt	-crlf
-/ext/standard/tests/strings/strtok_variation2.phpt	-crlf
-/ext/standard/tests/strings/strtolower-win32.phpt	-crlf
-/ext/standard/tests/strings/substr_compare.phpt	-crlf
-/ext/standard/tests/strings/ucwords_variation1.phpt	-crlf
-/ext/standard/tests/strings/unpack.phpt	-crlf
-/ext/standard/tests/strings/vfprintf_basic7_64bit.phpt	-crlf
-/ext/standard/tests/strings/vfprintf_variation11_64bit.phpt	-crlf
-/ext/standard/tests/strings/vfprintf_variation12_64bit.phpt	-crlf
-/ext/standard/tests/strings/vfprintf_variation12.phpt	-crlf
-/ext/standard/tests/strings/vfprintf_variation13_64bit.phpt	-crlf
-/ext/standard/tests/strings/vfprintf_variation7.phpt	-crlf
-/ext/standard/tests/strings/vprintf_basic2.phpt	-crlf
-/ext/standard/tests/strings/vprintf_basic7_64bit.phpt	-crlf
-/ext/standard/tests/strings/vprintf_variation10.phpt	-crlf
-/ext/standard/tests/strings/vprintf_variation14_64bit.phpt	-crlf
-/ext/standard/tests/strings/vprintf_variation17.phpt	-crlf
-/ext/standard/tests/strings/vprintf_variation4.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_basic4.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_basic8.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_variation12_64bit.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_variation13_64bit.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_variation15_64bit.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_variation17.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_variation4_64bit.phpt	-crlf
-/ext/standard/tests/strings/vsprintf_variation7.phpt	-crlf
-/ext/standard/tests/strings/wordwrap.phpt	-crlf
-/ext/standard/tests/strings/wordwrap_variation5.phpt	-crlf
-/ext/standard/tests/url/rawurldecode_variation_001.phpt	-crlf
-/ext/tidy/tests/009.phpt	-crlf
-/ext/tidy/tests/013.phpt	-crlf
-/ext/tidy/tests/021.phpt	-crlf
-/ext/tidy/tests/tidy_error.phpt	-crlf
-/ext/tokenizer/tests/002.phpt	-crlf
-/ext/tokenizer/tests/bug26463.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_error.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation11.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation12.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation13.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation14.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation15.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation18.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation19.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation1.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation2.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation3.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation5.phpt	-crlf
-/ext/tokenizer/tests/token_get_all_variation8.phpt	-crlf
-/ext/xml/tests/bug32001b.phpt		-crlf
-/ext/xmlwriter/tests/OO_003.phpt	-crlf
-/ext/xmlwriter/tests/xmlwriter_write_attribute_ns_error_001.phpt	-crlf
-/ext/zlib/tests/008.phpt			-crlf
-/ext/zlib/tests/gzopen_variation4.phpt	-crlf
-/ext/zlib/tests/gzrewind_error.phpt	-crlf
-/ext/zlib/tests/readgzfile_variation7.phpt	-crlf
-/ext/zlib/tests/readgzfile_variation8.phpt	-crlf
-/ext/zlib/tests/zlib_scheme_stat_basic.phpt	-crlf
-/sapi/cli/tests/006.phpt			-crlf
-/tests/run-test/test009.phpt		-crlf
-/Zend/tests/012.phpt				-crlf
-/Zend/tests/bug28072.phpt			-crlf
-/Zend/tests/bug38624.phpt			-crlf
-/Zend/tests/bug40784.phpt			-crlf
-/Zend/tests/bug43053.phpt			-crlf
-/Zend/tests/bug51176.phpt			-crlf
-/Zend/tests/each_003.phpt			-crlf
-/Zend/tests/errmsg_006.phpt			-crlf
+# Replace $Id$ strings with 40-character hexadecimal blob object name.
+/ext/mysqlnd/mysqlnd.h          ident
+/ext/ext_skel.php               ident
+/ext/phar/phar/pharcommand.inc  ident
+/ext/dba/libinifile/inifile.c   ident
+/ext/dba/libflatfile/flatfile.c ident
+/ext/dba/libcdb/cdb_make.c      ident
+/ext/dba/libcdb/cdb.c           ident
+/run-tests.php                  ident
+
+# A custom merge driver to avoid automatic merges. These are manually merged.
+# See https://wiki.php.net/vcs/gitfaq
+/NEWS                merge=NEWS
+/UPGRADING           merge=NEWS
+/UPGRADING.INTERNALS merge=NEWS
+
+# Enable commit diffs for binary PHP test files. Some PHP test files include
+# special characters, such as ASCII control characters. Git recognizes these as
+# binary and wouldn't generate diffs.
+*.phpt diff